Network to expand their organization and the other which

Network Design

Local Area Network

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Within a same
organization, the use of the local area network is very
effective.  The interconnected computers
or workstations which share the data and services composed in the Local Area
Network. Moreover, the Local Area Network supplies the network capability to
the several computers which may be present in an office building. In order to
share resources, files, printers or other application, the LAN plays an
important role. Moreover, it can be connected to some other local area network
also. The cost to hardware require for the local area network is also not much,
because the local area network uses inexpensive hardware like Ethernet, hubs
and network adapters (Mitchell).

As the layout of the DesignIT consists of
several cubicles, computers and the server room, the LAN network will best suit this layout. The six computers that the
DesignIT is planning to add into their business layout in order to expand their
organization and the other which are already present can be interconnected
using the local area network. And from the server room, these computers can be
managed so that easy sharing of files, resources and the printers that
available in the DesignIT organization can be done.

Network Architecture

Client Server Architecture

In the client-server architecture,
several numbers of clients send the request to the server and the server
respond back by sending the requested resources to the respective clients. The
network servers that provide requested resources to the clients can be one or
more as per the requirement or the layout of the business organization and
these network servers are also known as computer servers or the servers only.
The clients are the workstations or the computers and for the data and the
software, they depend on the server. The servers manage the various network tasks
and services by running their own orating system.

As
in the layout of the DesignIT, there are four cubicles before and the company is
planning to add six more computers, then the request and the services of these
workstations can be managed easily by using
the client-server architecture. There is a server room also from where the
server will manage these computers’ request and respond them back with their
respective request. The computers that send request can be called as clients (Zandbergen). One or more client
can send request to the server. The
client server architecture looks like:

 

The
client can be one or more and the servers also, more than one client can send
request to the servers and the server will send back the response the all the
clients as per their requests.

LAN and WLAN wiring consideration

Prior
to the installation of LAN and WLAN, there
are few wiring considerations that should be kept in mind and these are:

Cabling

Each
access point will need a wiring closet
that will run from it to the nearest Intermediate Distribution Frame (IDF). The
cable length can be 100 meters. If through the cable, we cannot reach the area,
then the different access point can be attached with each other through the
wireless using meshing concept.

Area layout

If
the area layout consists of the metal, then while installing LAN, then a
special consideration should be kept in mind as the metal can block the signal
as well as create multipath.

Coverage

How
much area will the LAN and WLAN cover depend on the fact that how large the LAN
and the WLAN system is. If the layout of the company is going to be expanding
in the future, then these systems are scalable. But initially, it is important
to save time and cost by having the needed length of the LAN and WLAN.

Site Survey

It
is important to analyze coverage mapping as well as the spectrum analysis. Spectrum analysis will analyze the
interference with other frequencies if exist. Ad, the coverage mapping will
ensure that whether the coverage requirements are met or not (Yoder, 2009).

Thus, it is important to consider these
considerations for LAN and WLAN.

Hardware
options and costs

(jgreco, 2013) The hardware options
and their respective cost for the DesignIT is recommended as follows:

MODEL

CONFIGURATION

COST

Mainboards
 
                                

Supermicro X9SCM
(support more than 4 SATA ports and bunch of USB ports)

$154-$170

CPUs

3.3GHz Xeon E3-1230v2 (has 8MB cache, 69-watt
TDP up to 32GB ECC)

Around $220

Memory

16GB

Around $50- $60

Hard Drives

3TB-4TB

$100-$150

Boot Device

Three 4GB USB flash device

$200-$220

 

 

Security Considerations

For Firewall

Firewall
by acting as a barrier between the unauthorized access and the network,
protects the network and provide security. But,
various security considerations should be adopted in order to provide more
security:

The information being send to the network
by the user should be encrypted first, so that no other unauthorized user can
access the network. If by any way he enters the network, still could not access
the confidential information as the encryption
mechanism is being used. For added security, the firewall should be
configured in such a way that it only accepts connection from the authorized
clients (Firewall Considerations).

Antivirus software

The
purpose of the antivirus is to stop the malicious threats from attacking the
system. But, various security
considerations should be adopted in order to provide more security:

The antivirus being used should have the
best virus detection rate.Regular updating should be done, in order
to add more security to the system.Smaller footprints (Antivirus
Software You Can Count On).

 

Software options and cost

The
hardware options and their respective cost for the DesignIT is recommended as
follows:

MODEL

CONFIGURATION

COST

 
Productivity Suite
 
                                

 
 
Microsoft Office
2010 Professional

 
$400

Antivirus

Norton
Antivirus 2011

$128 for 10 users

CD/DVDs

Nero Multimedia Suite 10

$40

Email Client

Microsoft Outlook

$110

Operating System

Window 7 professional

$150-$220

 

Instead
of this commercial software for operating system, productivity suite,
antivirus, CD/DVDs and email client, the free
software are also available for all of these software options (Pacchiano,
2011).

Cost

The
labor cost, equipment cost and the service cost for the recommended cost is
expected to be as follows:

 
 
CATEGORY

 
 
DESCRIPTION

 
 
EXPECTED COST

 
 
Labor Cost

It includes direct wages, transport,
social wages and the payments for health and retirements.

 
 
 
$3000-$5000

 
 
Equipment Cost

It includes the cost of various equipment’s
like machinery, hardware and software.

 
 
$2000-$3000

 
 
Service Cost

It includes the cost of different
services being provided to the employees of the organization.

 
 
$1000-$2000

 

 

Single point of failure

If
the LAN uses single switch and all the routers are connected to it, then the
failure can occur if the switch fails to work.

Mitigating Technique:

If
the server fails due to the failure in the switch, then it is suggested to use
the more than one switches so that
single point of failure can be prevented. And, moreover, we can use more than
one server, if one server fails to handle requests, then other server can come
into picture and handles the requests.

 

References

Antivirus Software You Can Count On. (n.d.). Retrieved March 8, 2015, from
http://www.softwaresecuritysolutions.com:
http://www.softwaresecuritysolutions.com/antivirus-software.htmlFirewall Considerations. (n.d.). Retrieved March 8, 2015, from
http://documentation.commvault.com:
http://documentation.commvault.com/commvault/release_8_0_0/books_online_1/english_us/features/firewall/firewall.htm#General_Considerationsjgreco. (2013,
April 8). So you want some hardware suggestions. Retrieved March 8,
2015, from https://forums.freenas.org:
https://forums.freenas.org/index.php?threads/so-you-want-some-hardware-suggestions.12276/Mitchell, B.
(n.d.). LAN – Local Area Network. Retrieved March 7, 2015, from
http://compnetworking.about.com:
http://compnetworking.about.com/cs/lanvlanwan/g/bldef_lan.htmPacchiano, R.
(2011, January 24). 5 Great Free Small Business Software Options.
Retrieved March 8, 2015, from http://www.smallbusinesscomputing.com: http://www.smallbusinesscomputing.com/biztools/article.php/3921836/5-Great-Free-Small-Business-Software-Options.htmYoder, J. (2009,
February 18). Top 5 Considerations Prior to Installing a Wireless LAN (WLAN).
Retrieved March 8, 2015, from http://www.racoindustries.com:
http://www.racoindustries.com/blog/post/Top-5-Considerations-Prior-to-Installing-a-Wireless-LAN-(WLAN).aspxZandbergen, P.
(n.d.). Network Architecture: Tiered & Peer-to-Peer. Retrieved March
8, 2015, from http://study.com: http://study.com/academy/lesson/network-architecture-tiered-peer-to-peer.html